Polyamide molding compounds having increased hydrolysis resistance
AssigneeBASF SE
InventorsJens Cremer, Rainer Xalter
Life of this patent
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Abstract
Described herein is a thermoplastic molding material including a) a mixture of 100 parts by weight of polyamide 6 or polyamide 6/6,6 and 5 to 100 parts by weight of aliphatic polyamide composed of C4-10-diamine and C8-16-dicarboxylic acid as component A), b) 10 to 70% by weight, based on component A), of glass fibers as component B), and c) 0 to 30% by weight, based on component A), of further additives as component C), preferably with a reduction in breaking stress according to ISO 527 after storage for 3000 h at 120° C. in a monoethylene glycol/water mixture in a 1:1 weight ratio of not more than 78%.
Claims16
A thermoplastic molding material comprising
- a) a mixture of 100 parts by weight of polyamide 6 or polyamide 6/6,6 and 7 to 50 parts by weight of aliphatic polyamide composed of C4-10-diamine and C8-16-dicarboxylic acid as component A),
- b) 10 to 70% by weight, based on component A), of glass fibers as component B), and
- c) 0 to 30% by weight, based on component A), of further additives as component C),
- wherein the molding material comprises no thermoplastic polyamides distinct from polyamides of the component A).
A method of using mixtures of 100 parts by weight of polyamide 6 or polyamide 6/6,6 and 5 to 100 parts by weight of aliphatic polyamide composed of C4-10-diamine and C8-16-dicarboxylic acid in molding materials, the method comprising using the mixtures for producing shaped articles for increasing the hydrolysis resistance of the shaped articles towards water or aqueous liquids.
A method of using mixtures of 100 parts by weight of polyamide 6 or polyamide 6/6,6 and 5 to 100 parts by weight of aliphatic polyamide composed of C4-10-diamine and C8-16-dicarboxylic acid in molding materials, the method comprising using the mixtures for increasing the hydrolysis resistance of the molding materials towards water or aqueous liquids.
A method of using mixtures of 100 parts by weight of polyamide 6 or polyamide 6/6,6 and 5 to 100 parts by weight of aliphatic polyamide composed of C4-10-diamine and C8-16-dicarboxylic acid, the method comprising using the mixtures for increasing the breaking stress of shaped articles comprising such mixtures which are in contact with monoethylene glycol.
Dependencies are inferred from the claim text.